<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link rel="stylesheet" href="style.css" />
    <style>
      #green {
        width: 500px;
        height: 300px;
        background-color: green;
      }
    </style>
  </head>
  <body>
    <div
      class="yellow"
      style="height: 300px; width: 500px; background-color: yellow"
    ></div>
    <div id="green"></div>
    <div class="blue"></div>
  </body>
</html>
